为了摸索杉树造林速生丰产措施,我所于1971年2月上旬营造了一片100亩的杉树试验林。1976年底,进行了一次调查,现将调查结果简介如下:一、部位、坡向不同对杉树生长的影响试验地位于凤凰山脉中下部蛇地龙山的 In order to explore the afforestation afforestation fast growing measures, I in early February 1971 to create a 100-mu fir caterpillar forest. The end of 1976, conducted a survey, the survey results are summarized as follows: First, the different parts of the orientation of the impact of Fir growth test site is located in the middle and lower parts of the Fenghuang Longshan snake